# P391-P395
# 继承
class Animal:

    def run(self):
        print("跑")

    def eat(self):
        print("吃")

    def drink(self):
        print("喝")

    def sleep(self):
        print("睡")

class Dog(Animal):

    def bark(self):
        print("叫唤")

xiao_tian_quan_object = Dog()
xiao_tian_quan_object.eat()